Improvement in sewing-machines



S; PARKER.

Sewing: Mahine.

No. 19,662. Patented March 16, 1858.

N PETERS. PhninLithugmphar, Walhingtmi. D. C,

NITED STATES SIDNEY PARKER, OF NEWV YORK,

PATENT OFFICE.

N. v, ASSIGNOR TO HIMSELF AND LEONARD \VESTBROOK AND HUGH HERRINGSHAVV.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 19,662, dated March 16, 1858. v

its construction and operation, referring to the drawings for greater clearness.

In the drawings, Figure 1 represents a side elevation of the apparatus; Fig. 2, asectional View of the lower spool and bobbin with its connections; Fig. 3, a top view of a pronged beam or rod for carrying the thread over the bobbin; Fig. 4:, a separate View of the lower spool; Fig. 5, the coneheaded bolt on which that spool revolves; and Fig. 6, an outside view of the bobbin with holes in its side for the passage of the thread; the like letters in all the drawings referring to like parts.

Motion is given to the machine by means of a wheel and crank, (indicated inFig. 1,) to which crank is attached a working-beam, e, which, at its upper extremity, is hinged to the horizontal oscillating bar f f, turning on a center, 00. The needle-stock.h is attached to the oscillating bar ff by means of the intermediate rod, 9, hinged at both ends. Thus by rotation of the wheel the needle 2' is made to work up and down, passing through the floor a of the table in the ordinary way. The needle-stock slides in a tube supported by the horizontal cross-rod 7c.

Attached to the axle d of the driving-wheel is also a cam or eccentric, (1, against the periphery of which is a horizontal bar, m, sliding through proper supports w w, and

having on its other extremity a'slotted and pronged beam or rod, as shown in Fig. 3. This cam d, by its rotation, forces the bar m away from its center (1, while a spiral spring or other equivalent forces it back when the pressure of the cam is removed. This cam is so shaped as to force the bar m toward the needie when the latter is down, the needle passing in the slot, and the prong 1, Fig. 3 catching the thread (indicated by a red line) and carrying it beyond the point 0 of the bobbin. As the beam at reverses its motion and the prong is withdrawn, the loose loop of the upper thread catches over the point 0 of the bobbin, and is drawn entirely over the same by I an upward motion of the bar w, (see Fig. 1,)

which takes up the slack of the thread, and should .be made to regulate its tension. 7

The bobbin is composed of three pieces, (shown in Figs. 4, 5, and 6,) and the whole, when together, rests: loosely on a socket or sockets, as shown in Fig. 2, the lower socket being formed by three or more pieces resting 1 against its lower cone, and the upper socket being a conical indentation in the upper plate, or something to correspond with it. The loop, therefore, in being pulled upward over the bobbin readily passes around the same both at the bottom and the top, neither being fastened or tight, and in so doing catches up the thread wound .on the spool of the bobbin, and one end of which passes out through a small hole in the side of it, as shown in Fig. 6. Thus by the downward and upward mo tion of the needle(constructed in the ordinary way for sewing-machines) a lock or'loop stitch will be formed in or near the center of the cloth or thing to be sewed, motion to the whole machine being given directly by the driving-wheel through the crank and cam, as

shown.

It is also obvious that by extending the bar f through the supporting tube or column 0- c,

Any suitable feed-motion for the cloth may also be used on the apparatus, no claim beingherein preferred therefor.

I do not claim, generally,the communicating of a reciprocal vertical motion to the needlestock for thepurpose of sewing by machinery; nor do I make claim to the use of a stationary bobbin resting in a loose socket over which n and the bobbin, Figs? 2, 4, 5, and 6 when the loop of the upper thread may be carried constructed and operating in the manner subto form a stitch without a shuttle but stantially as described.

What I do claim, and desire to secure by SIDNEY PARKER. Letters Patent, is- Witnesses: w v

The combination and arrangement of the D. SHEPHERD,

horizontally-reciprocati'ng pronged looper on XVARD MOLEAN. 

